Adjustable saw-gage



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W. v. PRINCE. ADJUSTABLE SAW GAGE.

No. 396,666. Patented Jan. Z2, 1889'.

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ADJUSTABLE SAW GAGE.

No. 396,666. Patented Jan. 22, 1889.

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UNITED STATES 'PATENT IVILIIIAM V. PRIN() l, 0F VINELAND, NEW' JERSEY.

ADJ USTABLE SAW-GAG E.

SPECIFICATION forming part of Letters Patent No. 396,666, dated January 22, 1889.

Application filed August Z5, 1886. Serial No. 211,869. (No model.)

To all whom it may concern:

Be it known that I, lVILLIAM V. PRIN UE, a citizen oi' the United States, residing in Yineland, New Jersey, have invented certain Improvements in Adjustable Saw-Gages,ot' which the following is a specification.

One of the objects of my invention is to provide for the ready and accurat-e adjustment ofthe gage and the secure locking of the same after adjustment, a further object being to provide for the proper longitudinal alignment ot' the gage, and a still further object being to permit the adjustment oi' the bearing-block ot the gage to any desired angle which the shape of the work to be sawed may require.

In the accompanying drawings, Figure I .is a plan view oi' an adjustable saw-gage constructed in accordance with my invention; Fig. 2, a transverse section, partly in. elevation, on the line I f2, Fig; l; Fig. 3, a transverse section, partly in elevation, on the line 3 el, Fig. l.; Fig. 4, a transverse section, partly in eleva-tion, on theline 5 6, Fig. l; Figs. 5, 6, and 7, end views showing different adjusts ments otA the gage-bloclc; Fig. 8, a plan vView ot' Fig. 7; Fig. i), a longitudinal section on the line 7 8, Fig. l; and Fig. l0, a sectional view showing how my improved gage can be applied to an ordinary slotted saw-table.

A represents part of the work bed or table of the saw, on which at a suitable distance from the saw and parallel with the line of the latter is a longitudinal hollow traine, B, a pin, a, near each end of this frame projecting into an opening in the table, and these pins thus serving to coniine the frame B in position both longitudinally and laterally.

The gagebar I) has at the back two projecting serew-stems, F F, which are adapted to nuts G, confined laterally between the opposite sides b b of the frame l5 and fitted loetween inwardly-proj ecting lugs d on said side bars, as shown in Fig. l, so that while each nut is confined laterally and longitudinally to the frame B it can turn freely in, its bearings in said frame. Each nut has on its periphery projecting teeth f, so that it constitutes in eiect a sprocket-wheel for the reception ot' the endless chain J, the latter serving to conneet the two nuts together and insure their joint and simultaneous operation when the upper portion ot the chain belt is grasped by the hand and moved in one direction or the other, the top oli' the 'frame B being recessed between the opposite bearings, as shown in Fig. il, so as to expose the chain .I and permit the ready grasping ot' the same. Supposing, therefore, that the gage-bar I) is parallel with the trame B lin the first instance, it must preserve this parallelism during any movement from or toward the saw, which is effected by the operation of the nuts G, no amount of pressure againstthe gage-bar su l'ticing to move the same t rom its proper position, as such `movement can only be et'tected by the rotation ot' the nuts. It happens in some cases, however, that the bearing-block K, carried by the gage-bar, bc comes worn unevenly, and in order to con1- pensate for any variation ot' this character I provide vfor the lateral adjustment et one end ot' the frame B. The pin e at one end ot' 'this trame is a fixed pin, being secured in position by means ot' a nut, g, as shown in Figs. l and 4:; butthe pin at the opposite end is secured to or forms part ot' a nut, M, which is guided laterally in the frame and is under the control ot' a screw-stem, N, the latter be ing confined laterally to the frame, but tree to turn in bearings in the opposite side bars, l), ot' the same, one end of the stem being so constructed as to provide a convenient handle whereby said stem can be manipulated. It will be seen, therefore, that as the pin a occupies a iixed position laterally in respect to the saw the nut is likewise a fixture, so th atby turning the screw-stem N in one direction or the other there will be a lateral movement of the end of the frame B to or from the saw, so that any variation in the truth ot' the face ot' the bearing-block K can be readily reine died.

In order that in the ordinary use of the device the tace ot the gage-block K maybe perfectly plumb with respect to the saw, the gagebar D has a set-screw, Qc, which serves as a stop to determine the inward movement of the lower portion ot the gage-block, so that by manipulating this screw the face of the gage-block may be adjusted as desired.

In order to provide for adjusting the face of the bearing-block K to different angles, as

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may be required by the different classes of work which have to be sawed, I hang said bearing-block to the gage-bar D by means of opposite links P, a bolt, S, passing longitudinally through the gage-bar and through openings near the lower ends of the links, and being provided at one end with a head, s, bearing on one link, and at the opposite end a nut, s', bearing on the opposite link. A similar bolt, T, having head t and nut 15, passes through the upper ends of the links P and through the bearing-block K.

The bearing-block has at the opposite ends cheek-pieces w, which overlap the ends of the gage-bar D, and one of the links P has'a setscrew, 0c, bearing upon the adjacent cheekpiece w of the gage-block, so that after adjusting the gage-block to the desired angle the tightening of this set-screw will cause the cheek-piece upon which it acts to press firmly against the end of the gage-bar and will draw the opposite link firmly into contact with the opposite cheek-piece, therebyimparting such friction to the gage-block as will effectually prevent the accidental displacement of the same from the position to which it has been adjusted.

Various modifications of my invention may be devised without departing from the essential features thereof. For instance, the pin d at the end of theframe' I3 might pass tlnfough. a lateral slot in said frame and be threaded at the upper end for the recept-ion of a thumbscrew, (see dotted lines, Fig. 1,) so that the frame can be adjusted laterally and secured in position after adjustment; but this lacks the self-locking feature of the screw-stem and nut, which I therefore prefer to use.

To a lug, o, on the back of Vthe gage-bar D, is secured one end of a graduated bar, fo', Fig. l, which passes through openings in the side bars of the frame B and serves to aid in effecting an accurate adjustment of said gagebar.

In cases where the saw-table is already furnished with a lateral slot for the clamp of the usual T-gage, a plate, V, may be secured to the clamp-block V', as shown in Fig. 10, this plate having near each end a bolt, whereby the frame B can be secured thereto, the necessity of forming pin-holes in the table being thus obviated.

I claim as my inventionj -l. The combination of the gage-bar having rearwardly projecting screw-stems, toothed nuts to which said stems are adapted, an endless chain adapted to said toothed nuts, and a single iixed bar or frame adapted to rest upon the saw bench or table and having bearings for both of the toothed nuts, the whole forming a single self-contained structure applicable to or removable from the saw bench or table as a unit, all substantially as specified. Y

2. The combination of the work table or bed, the frame B, pivoted thereto at one end, butfree to swing at the opposite end, means for securing said free end of the frame after adjustment, a gage-bar having projecting screws, nuts carried by the frame B and adapted to said screws, and means for simultaneously operating said nuts, all substantially as specified.

3. The combination of the work table or bed, the gage-bar, the pi vot-ed frame B, a screw-coinlection between the same and the bar, a pin adapted toan opening in the worktable and having a nut, and a screw-stem earried by the frame B and adapted to said nut, all substantially as specified.

^ 4i. The combination oi' the gage -bar, the gage-block, the hanging-links, pivot-bolts for connecting one end of each link to the gagebar and the other end to the gage-block, cheek-pieces interposed between the links and the ends of the gage-blocks, and a clamping-screw carried by one of the links and bearing against one of the cheek-pieces, all substantially as speciiied.

5. The combination of the gage-bar, the frame B, and the screw-connection between the two, with the work-table having a groove and a plate having a block adapted to said groove, and bolts for the reception of the opposite ends of the frame B, all substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

VILLIAM V. PRINCE.

lV'itnesses:

A. E. PRINCE, R. II. STARKWEATHER. 

